How can I effectively teach someone how to ride a bike?

To effectively teach someone how to ride a bike, start by ensuring they have the right size bike and helmet. Find a flat, open area with no traffic to practice. Begin by teaching them how to balance while sitting on the bike, then practice pushing off and coasting. Encourage them to pedal slowly and practice turning. Be patient, offer encouragement, and provide guidance as needed. Practice regularly until they gain confidence and can ride independently.